<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        body { font-family: Arial, sans-serif; text-align: center; margin-top: 50px; }
        h1 { color: #ff0000; }
        .container { max-width: 600px; margin: 0 auto; }
        a { color: #0066cc; }
    </style>
</head>
<body>
    <div class="container">
        <h1>404 - 页面未找到</h1>
        <p>你请求的页面不存在。</p>
        <p><a href="/">返回首页</a></p>
    </div>
</body>
</html>    